Flexible Display Roller Skewing Prevention via Limit Mechanism
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Solution Overview
Problem
Roller-type flexible display apparatuses face issues with skewing and rolling dislocation of the flexible display screen due to relative movement between the support frame's scissor rack and housing portions, leading to potential breakage during extension and folding.
Innovation Solution
Incorporating a limit mechanism with gear racks and synchronizing gears connected to the scissor rack, which limits relative movement between the symmetry axis of the scissor rack and the housing portions, ensuring synchronized movement and preventing skewing and dislocation of the flexible display screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the support frame is unfolded to support the flexible display screen during extension, then the display screen can be pulled out and supported, but relative movement between the scissor rack and housing portions causes skewing and dislocation of the display screen
Solution Approach 1:
A limit mechanism is introduced as an intermediary component between the scissor rack and housing portions. This mechanism includes a limit component on the scissor rack and a corresponding limit structure on the housing, which work together to constrain relative movement and maintain precise alignment of the display screen during extension and folding operations
Solution Approach 2:
The limit mechanism changes the movement parameters of the scissor rack by imposing constraints on its relative movement with respect to the housing. This controls the position and orientation parameters of the support frame, thereby preventing skewing and dislocation of the display screen while still allowing the necessary extension motion
2Adaptability or versatility
If the scissor rack allows relative movement with housing portions for flexibility, then the apparatus can extend and fold, but this causes skewing and potential breakage of the flexible display screen
Solution Approach 1:
The limit mechanism serves as a mediating structure that allows the scissor rack to move relative to the housing while simultaneously preventing harmful skewing movements. The limit component and limit structure work together to guide the movement, maintaining stability of the display screen during the necessary adaptive motion
Solution Approach 2:
The limit mechanism is designed to be dynamic rather than completely rigid, allowing controlled movement in the desired direction while constraining movement in harmful directions. This enables the apparatus to maintain both adaptability for extension/folding and reliability for preventing screen damage
Data Source
AI summary
A flexible display apparatus includes a support frame, a housing, a roller, a flexible display screen, and a limit mechanism; wherein the support frame includes a scissor rack; the housing includes a first portion and a second portion that are detachable; the roller is disposed in the first portion, one end of the flexible display screen is connected to the roller, and the other end of the flexible display screen is connected to the second portion; and the limit mechanism is connected to the scissor rack, and the limit mechanism is disposed on at least one of the first portion and the second portion to limit relative movement between a symmetry axis of the scissor rack and a portion where the limit mechanism is disposed.